summaryrefslogtreecommitdiff
path: root/arch/powerpc/cpu/mpc85xx/tlb.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/cpu/mpc85xx/tlb.c')
-rw-r--r--arch/powerpc/cpu/mpc85xx/tlb.c70
1 files changed, 44 insertions, 26 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/tlb.c b/arch/powerpc/cpu/mpc85xx/tlb.c
index b3037ac..f2833a5 100644
--- a/arch/powerpc/cpu/mpc85xx/tlb.c
+++ b/arch/powerpc/cpu/mpc85xx/tlb.c
@@ -55,7 +55,45 @@ void init_tlbs(void)
return ;
}
+void read_tlbcam_entry(int idx, u32 *valid, u32 *tsize, unsigned long *epn,
+ phys_addr_t *rpn)
+{
+ u32 _mas1;
+
+ mtspr(MAS0, FSL_BOOKE_MAS0(1, idx, 0));
+ asm volatile("tlbre;isync");
+ _mas1 = mfspr(MAS1);
+
+ *valid = (_mas1 & MAS1_VALID);
+ *tsize = (_mas1 >> 8) & 0xf;
+ *epn = mfspr(MAS2) & MAS2_EPN;
+ *rpn = mfspr(MAS3) & MAS3_RPN;
+#ifdef CONFIG_ENABLE_36BIT_PHYS
+ *rpn |= ((u64)mfspr(MAS7)) << 32;
+#endif
+}
+
#ifndef CONFIG_NAND_SPL
+void print_tlbcam(void)
+{
+ int i;
+ unsigned int num_cam = mfspr(SPRN_TLB1CFG) & 0xfff;
+
+ /* walk all the entries */
+ printf("TLBCAM entries\n");
+ for (i = 0; i < num_cam; i++) {
+ unsigned long epn;
+ u32 tsize, valid;
+ phys_addr_t rpn;
+
+ read_tlbcam_entry(i, &valid, &tsize, &epn, &rpn);
+ printf("entry %02d: V: %d EPN 0x%08x RPN 0x%08llx size:",
+ i, (valid == 0) ? 0 : 1, (unsigned int)epn,
+ (unsigned long long)rpn);
+ print_size(TSIZE_TO_BYTES(tsize), "\n");
+ }
+}
+
static inline void use_tlb_cam(u8 idx)
{
int i = idx / 32;
@@ -82,15 +120,9 @@ void init_used_tlb_cams(void)
/* walk all the entries */
for (i = 0; i < num_cam; i++) {
- u32 _mas1;
-
mtspr(MAS0, FSL_BOOKE_MAS0(1, i, 0));
-
asm volatile("tlbre;isync");
- _mas1 = mfspr(MAS1);
-
- /* if the entry isn't valid skip it */
- if ((_mas1 & MAS1_VALID))
+ if (mfspr(MAS1) & MAS1_VALID)
use_tlb_cam(i);
}
}
@@ -134,7 +166,7 @@ void set_tlb(u8 tlb, u32 epn, u64 rpn,
#ifdef CONFIG_ADDR_MAP
if ((tlb == 1) && (gd->flags & GD_FLG_RELOC))
- addrmap_set_entry(epn, rpn, (1UL << ((tsize * 2) + 10)), esel);
+ addrmap_set_entry(epn, rpn, TSIZE_TO_BYTES(tsize), esel);
#endif
}
@@ -201,26 +233,12 @@ void init_addr_map(void)
/* walk all the entries */
for (i = 0; i < num_cam; i++) {
unsigned long epn;
- u32 tsize, _mas1;
+ u32 tsize, valid;
phys_addr_t rpn;
- mtspr(MAS0, FSL_BOOKE_MAS0(1, i, 0));
-
- asm volatile("tlbre;isync");
- _mas1 = mfspr(MAS1);
-
- /* if the entry isn't valid skip it */
- if (!(_mas1 & MAS1_VALID))
- continue;
-
- tsize = (_mas1 >> 8) & 0xf;
- epn = mfspr(MAS2) & MAS2_EPN;
- rpn = mfspr(MAS3) & MAS3_RPN;
-#ifdef CONFIG_ENABLE_36BIT_PHYS
- rpn |= ((phys_addr_t)mfspr(MAS7)) << 32;
-#endif
-
- addrmap_set_entry(epn, rpn, (1UL << ((tsize * 2) + 10)), i);
+ read_tlbcam_entry(i, &valid, &tsize, &epn, &rpn);
+ if (valid & MAS1_VALID)
+ addrmap_set_entry(epn, rpn, TSIZE_TO_BYTES(tsize), i);
}
return ;